SOLUTION: Multiply. (9x+4)(7x^2+4x+4)

Algebra ->  Distributive-associative-commutative-properties -> SOLUTION: Multiply. (9x+4)(7x^2+4x+4)      Log On


   

Question 222681: Multiply. (9x+4)(7x^2+4x+4)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

%289x%2B4%29%287x%5E2%2B4x%2B4%29 Start with the given expression.


9x%287x%5E2%2B4x%2B4%29%2B4%287x%5E2%2B4x%2B4%29 Expand.


Distribute.


63x%5E3%2B36x%5E2%2B36x%2B28x%5E2%2B16x%2B16 Multiply.


63x%5E3%2B64x%5E2%2B52x%2B16 Now combine like terms.


So %289x%2B4%29%287x%5E2%2B4x%2B4%29 expands to 63x%5E3%2B64x%5E2%2B52x%2B16.


In other words, %289x%2B4%29%287x%5E2%2B4x%2B4%29=63x%5E3%2B64x%5E2%2B52x%2B16.